Phillip Tobias. South African palaeoanthropologist Phillip Vallentine Tobias in his office with various hominid fossils, including a skull of Paranthropus (Zinjanthropus) boisei in the foreground. Tobias is best known for his pioneering work at South Africa's famous hominid fossil sites, and is one of the world's leading authorities on the evolution of humankind. He has been nominated 3 times for a Nobel Prize, has received numerous honorary doctorates and been awarded South Africa's Order of Meritous Service. His best known work was on the hominids of East Africa where, along with Louis Leakey and John Napier he gave the name Homo habilis to a collection of hominid fossils excavated in 1960 at Olduvai Gorge, north Tanzania. Photographed in April 2005.